The standard disk drive for the C64 is the 1541, but the 1570, 1571, 1581 and the SFC-1002 as well run with a C64. You can also connect drives equipped with an IEEE-488 (GPIB) port, e.g. the SFD-1001, via the cartridge port and an IEEE-488 interface cartridge.

The VC-20 standard drive is the VIC-1540 which can only be used with this computer. For the C128 it is the 1570/71. The C16/116 or the Plus/4 use the 1551, so to speak a VC-1541 with parallel port.

Commodore disk drives can be connected with an adapter cable (see X1541) to a PC.

New Hardware

Microcontrollers and FPGAs are so cheap and fast nowadays that it is possible to build an "alternative floppy" with a relatively small amount of parts. Most frequently SD cards instead of diskettes are used as storage media for this alternative solution.